If you can, get one of your brothers to come in and watch you for the Squats and the Romanian Deadlifts. Have them read the above post which steve made about form, and have them watch you (especially on the RDLs) to make sure you're doing it right. While form is always important, it is extra important on those two exercises.
If you can't do it with a chair, have one of your brothers stand behind you, with his hands together like he was going to do a caber toss. Bring your legs back, and put your feet (laces down) onto his hands. When you go to do your pullup, push off with your legs too with the least amount of weight possible for you to still do the pull up. Having a person there helping out is (to me) more beneficial than a chair (even though using a chair is perfectly fine).
haha i will c how keen they are to help me out. dont get me wrong they are great but im sure theyed just laff at me all the way thru. ill try to persuade them.
thanx
x