good size for shop...I know bigger is better

[Red68]

I will be moving to the Dallas area in the next couple months and plan to buy a house with an acre or 2 with room for a shop. I have a 68 LWB, that I work on from time to time as well as a 69 impala that I am working on for my wife. I want to install a lift, not sure I should go with a 2 post or 4 post.

My biggest question is to fit 2 cars with room to work and a lift what would you guys think would be a nice size, 30x40, 12' ht. 1 or 2 roll up doors?

I know bigger is better but I dont want to break the bank, what is a good sf price for an insulated pre-engineered building.

Is there any websites that has examples? I have done a google search and have not turned up what I am looking for.

Thanks for any info you can provide