Need advice on Blazer

[Big O]

New to the 4x4 world I have a chance to buy a 1972 Blazer with 350, 4-speed tranmission, 4 inch suspension lift. Body panels look good other than fresh paint. Cab floor panels need replacing, Doors are rusting on the inside bottom part of the door. The cab looks good other than the floor and is a A/C cab. Top has a 1/2 hole,that can be patched. Drive train, Motor sounds good and c/v joints need to be replaced on front drive shaft. The price is $3500, willing to fix everything but need to know if it sounds like a good start & price. Is floor panels hard to get and how much are them.