In regards to clearing vines and roses.
I also have an FS250. Lovely, powerful tool. Takes down 3" saplings. ONE AT A TIME.
A FEL alone is a poor tool.
A FEL with a tooth bar or Piranha bar is a great tool. A grapple is the best.
Being CHEAP I've only bought clamp-on pallet forks, because I knew I needed them for other uses.
Clamp on pallet forks, are they worth buying? - Page 2
By angling the forks right we were able to clear an area about 100' by 50' in a few hours, starting with a totally untrained tractor driver (my son). Angle the forks down a bit, dig in, drop the bucket to ground level and level the forks, push, fill the bucket, curl back, RIP up, dump, REPEAT.
We were pulling up vines as thick as my wrist.
We had first tried the FS250 - too slow.
We then tried just the FEL, but we virtually had to dig up ALL the dirt.
Now I might not be able to do the big vines with my
B7610 because the
M4700 is rated for 2000 lbs at the FEL, but I'm sure it would do a pretty good job.
As the wallet refills I'm probably going to be getting a Piranha but the pallet forks made a BIG difference.
I'm pretty sure a B3030 with a Piranha could put an end to the OP's days of vines and roses.
/edit
And on the subject of chipping vines -
I've a thread on my Jinma experience so far.
http://www.tractorbynet.com/forums/attachments/277284-jinma-8-chipper-first-hours.html
Probably 80% of the ""stuff" I've chipped has been vines and brambles. Mostly between 1/4 inch to 2 inches. They chip better if you cut them and give them a week or so to dry. It's not easy, but with a pusher stick they become small pieces.