I recently returned to swtor and rekindled my enjoyment of the space missions. Is this a viable leveling method? Or should one stick more to flashpoints and warzones? I did purchase the legacy xp boosts to space missions so i hope that i haven't wasted my cartel coins.
You can level using space, but ultimately you'll need to do your class quests. Those will be hard if you dont do normal ground content to get gear upgrades (or at least spend credits for gear in the GTN).
There are nowhere near enough space missions to level you up without doing a ton of repeats though, so up to you.