I struggle with indecisiveness so I know a custom chapter would probably be the right call in the long run.
With that in mind then, it comes down purely to how you will favour combat. I would think it hard for a hardcore blood angels player to get out of the melee mode quite so quickly so some armies are certainly not as good an idea. At that point, Iron Hands aren't so great due to lacking mobility (something you may not like) however Salamanders may step in not too bad, they like it close and personal like raven guard but instead of mobility they tend to have enhanced hitting power. From there I would say however that Salamander Relics tend not to be as great imo, not as much variety (last I remember reading their codex, more melee and nearly no ranged relics).
However if you like gimmicks...you can make a T7, 8 Wound Gravis Captain with a 6+ FNP and -1 to wound relic from salamanders. He may not be fast but he eats a lascannon to the face pretty confidently and a majority of other weapons have to wound him on 6s. A Gimmick yes, but my experiments and screwing around with codices is where I find joy (once made a 11 Strength Abominant in GSC. Melee attack was swinging at strength 22, pretty sure he would wound TITANS on 2s).
I think I'm too much of a beginner to be considered a hardcore BA player. I haven't added up my new points total, but it should be just over 2000 now. Not including the Indomitus box I have coming.
I've read that taking units that don't take advantage of the BA melee bonuses is only going to handicap myself. Things like Eliminators, Redemptor Dreads, Repulsor Executioners, etc.
I'm not trying for a tournament winning, hyper competitive list. I just don't want to play an already seemingly not very beginner friendly playstyle on hard mode. Most likely I'm just over thinking the whole thing.