Hi Michelle - and welcome to the UK Boards
You have received some superb advice here - I am sure that eventually we'll all be able to help build your itinerary!
To answer some of your queries
*Is there a Wal-Mart?
Wal Mart are not here "as such", although I do believe there are one or two actual Wal Mart Stores. Wal Mart have taken over or own the ASDA Supermarket Chain - but I personally dont think they compare in the slightest to your Wal Mart.
*How much does food cost (estimate)?
Are you talking Restaurants here? If so - then eating out in Restaurants is more expensive than in the USA, and the service doesn't always match that which we are becoming accustomed to in Florida

We find 'Pub Grub' a much better option. We usually expect to pay between 10 and 15 pounds per person for a really good meal in an English Pub. A lot of the times, these are 'home cooked' style meals and really enjoyable. We certainly dont have as many Chains of Fast Food Eateries as you have in the USA.
*How much does public transportation cost?
This can depend on where abouts you are in the country. In the centre of London - you can buy Railcards that give you access to all the zones on the Underground, plus the busses for a reasonable cost and they are valid all day. Staying in the suburbs and travelling into London by Public Transport can be pricey - you need to choose your times of travel to get savings.
*Are the roads toll roads?
No - I only know of 1 Toll Road and that is at the Dartford Tunnel, which is on the M25 Motorway - the cost for this for a car is One Pound each way. I am sure someone else will confirm if there are any other toll roads in other parts of the Country, but I havent seen one
*Average gas cost?
I am not too sure as it does vary slightly but we pay about 75pence per Litre for Diesel. Someone else might help with Petrol.
*Average rental car cost?
Again - I have no idea, but check out some UK websites:
Expedia Car Hire
*Is $7500/mth remotely reasonable? (About 5000 pounds?)
I would think so - but you need to do your homework first so that you could budge properly.
*Weather in June is ... rainy? (This is supposed to be a joke - but it is England we're talking about.)
LOL - well we've just had the wettest June I believe? Usually a nice month - balmy days and warm evenings.
We have travelled to quite a lot of different area's of the UK for weekend breaks and have found it easier to stay in an hotel, just outside the city and use this as a base. A lot of our Towns now have Park & Ride schemes for Weekends, so this may be of use, you drive to a location just on the outskirts of a town, leave your car here and the Council provide Busses to take you into the Town Centre. This takes the strain from driving round trying to find Parking Spaces and alleviates traffic congestion in the Towns.
I would also recommend the Open Top Bus Tours which again operate in most major Towns/Cities. This gives you the overall view taking you to the local places of interest, you can hop on and off at your leisure and explore and investigate to your hearts content - when you're done, you just hop on the next bus to the next point of call. Here is a link to
City Sightseeing which lists all the Towns and Cities they operate in in the UK and also prices. These are well worth the money in my opinion and we always take one when visiting a new area. This way - you wont miss the important bits!
If it were me, I think I would sit with a map of the UK - divide it into say 4 sections, and then find a central base in each section and stay a week in each section. It sounds like you want to do a whistle=stop tour - this would give you the chance to have a good *overall* feel of everywhere. How awful would it be if you booked and paid for a Cottage somewhere for 2 or 3 weeks, but after a couple of days realised you've seen all you want to see in that area and then you have to travel miles and miles to get to other places? Of course, this is only my opinion - but if you needed any further help with this suggestion, please feel free to email me and I'd be only too happy to help.

Maybe we coule tie in a Mini Dis meet whilst you're over here too?
