OSR RPG Idea: Bloodied and Battered

For a couple weeks, I've been working on a tabletop RPG inspired by Lamentations of the Flame Princess, the Black Hack, and Dungeon Crawl Classics, that is, not a retroclone so much as inspired by old style games. I would like to know if the following blend of mechanics seems like a good idea to anyone.

• Six basic attributes plus Luck
• Two main class dependent scores: Combat Proficiency Score (BAB/to-hit) and Magic Proficiency Score (sort of similar to caster level). Both of them are capped at 10.
• Level-less spells (Kinda similar to VaM) where you will roll a d20 and add your Magic Proficiency Score to get a result on a d30 table
• Standardized experience totals to level up among all classes. So, just like 3e, a wizard needs the same exp. as a fighter to level up.
• Very low hit points (level 1: 3 hit points and level 20 is normally 15 hit points)
• Anyone can learn spells, but learning them comes with a cost
• Percentile based skills, where the actual %s are determined similar to the Fate skill pyramid, except for a ladder instead of a pyramid
• Abilities each improve/harm one or two skills (+/-20%), but Luck affects all skills (but with less effects than the actual relevant ability) (+/-10%)

Sorry for all of the word vomit, but I would like some comments about any of these concepts that seem particularly good or particularly bad as I'm trying to get a functioning draft out before the end of the month. I do have more details than this on the system in my notebook/brain, but the aforementioned things are more of the important parts. If it's relevant, classes are the:

• Warlock
• Man-of-Arms
• Sorceror
• Druid
• Cultist
• Assassin
• Hunter
• Champion
• Marksman
• and Pugilist

The current WIP name is Bloodied and Battered and it's supposed to be a rules light dark fantasy-esque game.