Namuya the Timewalker:
I think it depends on what kinda warlock you want to be, Ix. Since you aren't going hexblade, are you going to be using eldritch blast as a primary source of damage? Or will you be going the melee route? (Your comment about Pact of the Blade makes me assume yes to melee.)
A one level dip into something like cleric or fighter might be better than heavily armored at level 1.
I'd be delighted to throw ideas around with you if you'd like, but I don't want to come off as overbearing. Warlock is oodles of fun!
If we weren't getting a free feat at level 1, a dip may be tempting, but since we are being very well boosted, there is room to be more thematic without having to worry about optimal.
I'm thinking melee for my damage, though likely having EB as a cantrip so there is always a ranged option.
Jarinal Shaethil:
Did you consider Talisman? It is not as flashy as most but has nice utility and flavor. Especially if you make it a dobloon and a sign of favor.
I hadn't considered talisman, but mainly because it doesn't feel flashy enough compared to the other boons. Summoning a weapon just feels cool!