Well,I got install my bumper and lips by myself so can share the info with you..just need a spannar set (and for those hard to reach places a socket wrench with adjustable head). I DIY install my bumper then take to paint shop so save some money pasang it.
some parts like bumper can be painted while its attached to the car.I think this way is better cuz we DIY ppl not so pro so mite accidently scratch the paint job while installing.If you take the parts to paint shop and spray,they will charge you for the installation..(for bumper last time was rm30 i think..i can easily do in my car porch)