Hmmm, what do you guys think of this?
Name: Michael
Race: Imperial
Birthsign: ?
Class: Ranger (maybe you guys can come up with a better name?)
Major Skills: Alchemy, Marksman, Blade, Light Armor, (your guys' thoughts on the other three?)
Sounds like a fun concept to me. Mixing two combat skills makes it more likely that you can build some variety into your game. I'd say the specific skills to pick depend on whether you're going more for roleplaying ("What would my character be good at?") or tactical efficiency ("How can I game the system to give me the best stat boots each time I level?").
If you're going for the former, consider some appropriate magic skill like Alteration (for "survival skills" spells, like water breathing or elemental resistances), Illusion (for sneaking up on things, calming/controlling creatures, etc.), or Mysticism (for Detecting Life around you, as a seasoned ranger might). You may also want to go for Athletics or Acrobatics (but see below).
If you're going for more efficient leveling, consider instead putting in some skills you can opt NOT to use if you want, so you have better control over when you level. Magic skills are generally good for this. Athletics is bad for this, as it's constantly boosting as you move around. Alchemy is of questionable use, as it's really, really easy to level, and if you rely on poisons much, you don't want to have to stop making them just to hold off on leveling. A spell school you use only occasionally and can cast repeatedly if you feel like practicing just for the purpose of leveling, like Conjuration, is often a particularly good bet. (I found myself frustrated to have picked Illusion for this because when you need to cast Invisibility or Paralysis RIGHT NOW in order to survive, you don't have the luxury of worrying whether you're going to level earlier than planned...)
EDIT: Also, for Birthsign, I rarely see folks recommend anything other than one of the Magicka-boosting or straight-up stat-boosting signs, as most powers can be replicated with spells eventually. For a Ranger, The Warrior, The Steed, or The Thief seem especially roleplaying-appropriate. The Serpent was kind of not super useful when I tried it on an earlier character, but it also seems thematically appropriate. The Lord and The RItual might be more useful and still potentially RP-appropriate powers.