I don't want to do a 'tell you something completely different to what you're asking
'* but would you not find a home made sandbag far more versatile than a DIY DL set up.
Consider the return of being able to do many exercises until your financial situation changes and allows you to expand your equipment and doing one bastardised variant ad nauseum.
Just an idea - www.rosstraining.com
* see classic "Q. I'd like to buy some kettlebells, please advise. A. Get an Olympic bar and bumpers
" type threads at CrossFit boards, Ross' forum and a thousand other places across the webosphere.