If your orginal roof of 9'5' was built before these regulations then they couldn't complain. But any recent changes would need to be within your local councils rules and regulations.
Your will need to take the measurements/ plans to the council to find out if your ok.
Any bearings will do really.
Betd do enduro bearings which are supposed to take side loads better, basicly they put more balls in the sealed unit. And leave out the cage
They snap its doesn't need questioning.
Buy top stuff 1st don't spend twice buying cheapo
Find someone to ride with Youl enjoy riding much more, even if its bmxers or dirt riders at the skate park.
Setup a riding back pack with pump tubes tools and spares, chain and a few bolts.
Like Bing says begginers will benefit loads from good brake setup.
Big brands like specialized, giant, trek, cannondale, gt, ect
Look for big discounts off 2012 bikes
Check
Chain reaction cycles.
Evans
Aire valley
Cycle store
Wiggle
Ect...
We just had theses 26" x 2.25-2.6
Eclipse tubes in for a local dh racer.
I have weighed them in against the maxxis dh tubes
You save just short of 400 grames that's a lot to save and they quote less puntures ?
Though they do cost £45 per tube and £12 for the special repair kit