Hi,
Which version of the test you go for really depends on what you want to really get from the results. The Y111 is a good starter position, and like biggles says you can upgrade later, but you are unlikey to get many usable matches from it to confirm your line with named people. the BigY test can give a lot more recent branches, from which if you are lucky you could contain matches which your could match to an actual MRCA.
Now looking at your living DNA halopgroup, ftDNA is showing that formed around 2600 BCE and they have results from around 60k testers spread over 11 sub-branches. I would suspect that a Y111 test would give you a more modern result than that, and put you at least into one of those 11, if not a sub-branch of one. I would suggest doing that, and then seeing how many matches you get and if any of then have gone to BigY that could bring you into a more recent time range if you upgraded. The Y-dna test though is still really a waiting game and down to luck on if you get good matches
Personally i did upgrade to Big-Y, but my group is estimated to have split off between 1360 & 1860, with the most likly time range aournd 15-1600, so i have not yet been able to get close to an matches for named people :-(
Richard