The bits that are hitting the ground are not necessarily going to be raised with a lift kit. On my FL1 it's the lower front sus' arms, the engine bash plate [ a worthy mod' /accessory to fit! ] front cross and rear crossmember, diff ...
Re 'taller' tyres:
Your tyre sizes - 215/65/16 -
215 is the tyre width,
65 is its aspect ratio, that is the distance from the rim to the tread's 'face' - that distance in this case is 65% of the tyre's width which is nearly 140mm.
The 16 is the rim's diameter.
So, 215/65/16 has a diameter of 685.9mm
215/70/16 has a diameter of 707.4mm [ + 21.5mm from st'd] or a lift of about 10mm
225/70/16 has a diameter of 721.4mm [ + 35.5 from st'd] or a lift of about 18mm
You mightn't be able to get those tyres sizes.
If you do go for 'taller 70 or 75 series tyres' you may well need a lift kit and possibly wheel spacers as well to allow room for the larger tyres.
'Taller' tyres will effect performance, slower acceleration, and poorer fuel economy - except for long steady motorway driving where you may get an advantage!
A lift kit can effect handling, fuel economy [ increased air resistance?], ride quality and may cause drive train / suspension parts to wear more quickly.
Finally, rim width plays a key factor on the width of tyre you can fit. 16" rims are 6J or 6 inches wide. Best to consult your tyre supplier of specific tyre sizes for your FL. 16" tyres seem to be dearer than 15" and 17" more so again.
I've raised my FL1 with aftermarket springs and I hope to soon fit 215/75/15 MT on a spare set of rims. My diff'... should be about 25mm higher. Total clearance then should be 225 mm, possibly a bit more.
I hope everyone's contributions help and not confuse!