I'd sell the 7D and play the hell outta the 10.
I wouldn't bother with a Legacy, for the cost over here you can grab a much better second hand amp (unless you really like the Legacy that is, and to be honest I've only ever seen 1 second hand Legacy in the U.K.)
Take a listen to some British amps (being that you live in Ireland, shipping would at least be less)
Cornford are mouthwatering, having heard the MK50 Head and the Harlequin also (played by non-other than our fave tech - Doc. Robert, I can vouch for just how amazingly beautiful these amps sound...imagine going to Music Live, with 100's of guitarists demonstrating gear for all the big manufacturer's, and then some small stand in the corner and above it all you can only hear a Cornford MK50 head.
The creamiest, smoothest sound I've ever heard.
You can usually grab a MK50 head for about £750 second hand, all you need then is the cab, and it don't have to be a Cornford so with a very small investment you've got the best sound in town!
"Sounds Great" stock Budda's but I don't know their prices at all.
I'd also look into the higher end Laney's which have a great lead channel, check out a Chrome - O - Zone.
I would definatley be more inclined to stay with British amps as we just get them for so much cheaper over here (obviously)
Any U.S. import will set you back a lot of money and for what you pay for one you could get a much better British amp.
Check out some of the Euro amps too, there's some stunning manufacturer's as I'm sure you know.
Traynor (Canadian) are back now aswell and they offer a very well priced all-valve amp with a U.K distributor (£499) which is getting some good write-ups) I'll try to get more info.
I'm not sure how things work in Ireland as regard availability, shipping etc...but if you do come across anything you want from over here that'll cost you an arm and a leg in Ireland just let me know and I'll try to help out.
For the sale of a DBK over here you should be able to set yourself up with a very good amp indeed.
Buying an amp is definately a purchase you have to put a lot of thought into, because as I've said, you can get some killer deals nowadays.
I'll sift through some old Guitarist/TG demo's of some good offerings and pull off a few demo's for ya.
good luck....shop well