Thanks for the reply Booli,
I would like the tuning to be around F-Bb-D-G or maybe a half step lower than that so baritone GCEA strings wouldn't work for me. I'll probably just buy a couple packs and see if they're long enough and what tuning they sound/feel good in.
Thanks for the link as well, i've always used strings by mail but maybe i can give strings and beyond a try.
Strings By Mail has a much wider variety of strings overall, as well as selling single strings (low-G [wound or smooth] or wound C). Over the past 18 months I've spent a small fortune (at both Strings By Mail, and Strings & Beyond - both great shops, good prices, fast shipping, etc) testing out strings from over a dozen string makers, for many of the different series from each maker. I have some faves, but they may not be the sound or feel or tension that others might be looking for, but I'm pretty confident in appreciating the response of my current instruments to the various strings that I've tried.
I've found that I actually prefer the F-Bb-D-G on my tenors, not only for a little deeper tone, but a sweeter sound and longer sustain.
With thicker fluorocarbon strings like the Worth brown BF, BS, or BB, or even the Martin M620 sets, I've been able to use E-A-C#-F# on tenors, but the trick is that when you first install the strings DO NOT tune then higher than this, otherwise they will be too floppy if you first tune to GCEA, and later want to tune down. I also experimented with using a wound 3rd, either 0.030" or 0.035" and was able to tune DGBE (re-entrant) on a tenor with good success using the Martin M620 set and a Thomastik-Infeld CF30 classical guitar string for the 3rd (G) string.
I have also played with tuning a baritone up to E-A-C#-F# (linear) with stock baritone strings (Martin M630, D'Addario EJ series bari set), and this seems to not be a problem for tension, nor intonation, and still has a nice feel, but I've not tried the F-Bb-D-G with a tenor set with these strings.
However, I did try the Aquila LAVA baritone GCEA (re-entrant) string set, ON one of my baritones, tuned to F-Bb-D-G and liked that very much, and it had a nice, full and sweet tone while not having too much tension and also having a nice long sustain, and did NOT sound too guitar-like.
Maybe some of this info can help guide your own experiments.