Hello,in answer to your questions.
1.Mid to low 40's
2.Good,but better with airbox restrictors removed.
3.A little,correct chain tension should be observed.
4.Dunno,ask luckywhiteheather!
5.1st service at 600 miles or 6 months,oil and filter,labour free.(Tho some dealers charge)About35quid.
2nd service,6000 miles or 1 year about 150.
3rd service,12,000 or 2 years.As yearly plus cambelts about 200 quid.
6.Standard screen is way too low,needs the "comfort" screen as standard.
7.Mine judders very slightly at about the last 15mph before stopping.It was temporarily fixed at first service but has returned.Expect a recall or fix soon.
8.Dunno,ask luckywhiteheather.