Prue,
No doubt you will have heard all the hulla-balloo about stainless steel v Aluminium ( apparently alzheimers from aluminium , but i can't remember)...don't let that worry you...plenty of people on here use aluminium without problems. The only thing you do need to watch is how you clean it...some cleaners will pit the aluminium...
As for the handles , i used to use a 50 litre aluminium pot that looked similar...only caveat on its use is that i didn't even try and lift it whilst it contained hot/boiling liquid. From an OH & S perspective , i wouldn't even try....
If you fit a weldless ball valve and have it at a suitable height to begin with , you should be fine....
Other alternative , is get a 50 litre keg ( legally of course) , get a hole cut in the top , and use that...the handles ( chime) will definately be fine...but again...i wouldn't try and lift it whilst its hot or full of hot wort....
Another option is always your local chinese supermarket...think i paid about $100 for it , IFRC...
Cheers
Ferg