So i wanna create my 2nd Dovakhiin (Ive had MANY alts but only one Dovakhiin)

Am thinking of a paladin-ish type..
Perks
Heavy Armor 12/12
Block 11/12
One-handed 11/12
Restoration 11/12

Then either Enchanting or Smithing (I dont want both of them)

Am not usualy of that sort who request tips on how to build my character.. However am on really strange tides on this type of character (Am usualy thief or spellcaster). Could this be survivable?

Very survivable. Take smithing if you think the use of soul gems for enchanting is a bit morally dubious. Personal opinion, add some alteration, nothing wrong with a Paladin using light and armour spells, and you can take the magic resistance perks as a 'blessing against witchcraft'.

Was going for enchanting, to be able to enchant my plate gear with magicka buff and regen (On those pieces that allows it of course)
Alteration was a pretty good idea Thank you for the input