Be aware that a lot of summer flowering heathers will require acidic soil... after all they live on moors/heaths! In my garden which has a ph of just on the acidic side of neutral I find many will just not grow, winter flowering ones do slightly better though. One solution I've used over the years was to acquire acidic compost specifically designed for this type of plant and generously add it to the planting area, I then have used it as a mulch each year to keep the ph better. Heathers will get leggy after a while though, pruning them back after flowering (not into brown wood though, they don't grow back if you do that) well help stop them going leggy for a while.
I've used various small hebes to good effect, you can sometimes find these in cheap sets of 6 at garden centres, I have before grown them in pots sunk into the ground, which might be better if you do not have much soil...just make sure they don't dry out if you do plant like that.I have an acer growing that way at the moment too.
Mind your own business is a tricky one, I have a neighbour who had it in her previous garden and it literally swamped everything and was hard to control...she treats it as bio-hazard, in my garden so far it doesn't go too mad, fingers crossed.
Steph'