Originally Posted by Mudu93
Other than that I plan on using Lx/Xt level front and long cage rear derailurs. I will also probably also go 8 speed since I have a fairly good extra 700c wheelset with a good 12-25 cassette on it.
Are you sure, that Lx/Xt front derailleurs are compatible with 8-speed cassette? Width of chain is different for 8 and 9-speed drivetrains. It will be working, but isn't reliably.
Originally Posted by GeoKrpan
If you go with bar end shifters you can use either a road or mountain front derailleur because the front shifter is friction, not indexed.
Nevertheless, they aren’t compatible always. One must be careful about a proper chain line for the derailleur. As an example, a front derailleur Sora is not compatible with a crankset Tourney because of that, despite the cranksets have similar sizes. It is not always possible to choose a bottom bracket length to fix the problem.