My position with this puzzle is that I finished it - after quite some chins-stroking - and have a complete and I think correctly filled grid.
Unfortunately - or fortunately - I figured out how the special clues needed to be combobulated prior to entry without having to piece together the initial letters of the extra words...life is too short to want to complete that challenge.
And as for the 10, 7 in the grid - I haven't really tried - well, having completed the grid I think I'd rather be out moving plants around the garden which seems to be what everyone else on this site is doing!
I thought it was a rather enjoyable puzzle save for the above reservations.