1) Your interest rate is going to be around 4%. So you "win" as long as the price today is about 2% or more lower than the price you pay in a year. In reality, assuming were talking about 200 points @ $100/per (OKW), the interest is going to be pretty negligible for 1 year at that type of rate. Your talking about $430.
2) You both have secure jobs. I personally wouldn't make any large purchases over the next few months until this situation gets under control, but that's my personal risk tolerance.
3) You have a healthy savings account. So your financing in order to keep yourself liquid. Thats a bit different than people who generally finance. For example, I refinanced my house and used the funds to pay for my
DVC. I had the cash on hand, but I'd rather have that invested in the market while paying a low interest rate. I don't consider that to really be financing my DVC. If anything, I'm just leveraging my investments.
Given these key things, I don't think your plan is bad. The only issue is timing. It's anybody's guess where prices will be in 6 to 12 months from now.