Home gym is all set up. And you are right, it is a bit tough on the budget.
As far as chains go. Call Toppers if you have plenty of bucks, or what I did, was just buy three times as much 3/8 inch chain. My 3 strands per side of 3/8 weighs the same as the Topper's 5/8 chain, and my whole set up was about fifty bucks.
For the power rack platform, I purchased 2 sheets of 3/4 inch plywood, and then put two 3/4 inch rubber mats on top of the plywood, then bolted the rack down on top of the rubber. If you ordered a rack from Dave, you will not need dumbells to hold down the bands, you can choke them around the bottom of the rack, because his racks have 4 inches of clearance on the sides.
My base is 6 foot by eight foot, and we squat bench and deadlift all inside or just outside of the racks, and it works great.
When you get yours put together it will rival Irishpower's home gym. Next stop, 2k total.
B.