Tempest Cleric all the way!
Str build options
Vhuman with HAM at level 1 with 16 Str, 14 Con, 16 Wis. Plate + shield 20 AC
Vhuman with Res(con) at level 1 with 16 Str, 14 Con, 16 Wis. Plate + shield 20 AC
Vhuman with Warcaster at level 1 16 Str, 14 Con, 16 Wis. Plate + shield 20 AC
Dex build options
Vhuman with Res(con) at level 1 with 16 Dex, 14 Con, 16 Wis. Half Plate + shield 19 AC
Vhuman with Defensive duelist at level 1 with 16 Dex, 14 Con, 16 Wis. Half Plate + shield 19 AC
Vhuman with Warcaster at level 1 16 Dex, 14 Con, 16 Wis. Half Plate + shield 19 AC
Hill Dwarf 14 Dex, 16 Con, 16 Wis. Plate + shield 20 AC + extra hit points
Wood Elf 16 Dex, 14 Con, 16 Wis. Half Plate + shield 19 AC
Either way you go, I'd probably bump Wis at 4 and 8. If I had to choose just 1 feat, I'd probably go Res(Con) since you can get it at level 1.
You can sit back and just blast if you want, but you'd get your money's worth by getting down into melee, even if you never even attack with your weapon.
Turn on Spirit Guardians, Spiritual Weapon, and sit down on the front lines and use your action for whatever you want whether it be attacking with your weapon, attacking with a spell, heal somebody, casting a utility spell, or just simply using the dodge action. You'll be a melee monster even with your one weapon attack. Lets count the d8s you'll be doing lol
2d8 with your weapon attack, 1d8 with your bonus action, 3d8 to every enemy within 15ft of you, and another 2d8 with your reaction if hit with an attack lol
Spirit guardians scales up pretty well 1d8 per up-cast so 5d8 from a 5th slot.
And then twice per fight, you can drop a maximized Shatter, Thunderwave, Call Lightning, etc....