Regarding proficiency I am thinking about Stealth of Perception - if I do not have this yet. I apologize for this level of disorganization we really need to make proper character sheets when we are level 4.
Metamagic is fun, if just for that reason then it's great. One on particular isn't in Tasha's list but ot allows you to mix two spells which can a blast. Keep in mind that any mundane chages you make are at no penalty but crazy ideas will have a chance of unexpected results. I have to look up the name but it vastly increases your spellcasting options.
Warcaster is another good one. Right now you autofail your concentration if hit, warcaster changes that.
I would consider taking both feats and only 1 point toward ability scores.
Word of Radiance would be great, there is an upgrade feat that turns this spell into a broken mess:
Metamagic modifier "Distance Spell" extends the reach of a spell 30ft, you could then target all creatures within 35ft (not 10, 5ft is basically touch) which is like an AOE but selective. So get that and another good one is quickened spell which moves one spell as a bonus action so you can cast twice.
I have to research this but I think you would need sorcerer points for this. It looks like you only get 2, and they replenish per long rest but I'd easily say you can gain one or both back per hour of rest.
I would also consider giving you the same number of points a sorcerer would get. 4 at level 4.
