Sorry OP but he's got major red flags waving from your update...
He's cagey with giving you any real information about his past, and that's most likely because he knows it will ring alarm bells !
He was immediately very intense right at the beginning ? Very suspect, because you can't be in love with someone you don't bloody know ! (Sounds like classic 'love bombing' and 'future faking' to me I'm afraid)
He actively discourages you from asking questions ? By being evasive and changing the subject etc ? Why ? What is he hiding from you ? Yes, we've all got 'baggage', but hiding the truth from you ? Nah ! In a proper relationship, you're not secretive and evasive. He's got major stuff to hide I'm afraid...
He's a 'hoarder' and you're 'minimalist' ? That never works out well now does it ? So you'd be the one to have to 'accommodate' all his superfluous shit, cos let's face it, you damn well don't need a drum kit if you no longer play in a band, do you ? But he wants you to lose your secure housing, your income, just so he can keep his 'clutter' ? yeah, he's really not thinking about you here is he ?
He could definitely move his job if he wanted to (you know, because he's so devoted/committed to you), but I'll bet he has 'reasons' (excuses) for why that wouldn't work ? (How long is his commute to work from yours anyway ? In miles and time ? )
Have you met his friends/ family/ workmates ? I'd expect to have met them after a year.
I'm so sorry, but this guy has enough 'red flags' to equip a damn navy !