The tone and the mix, if this were a 'practice' recording, would be worthy of assay.
This project is your attempt to create a commercially viable work. Until you create music that is worthy of recording well, and having appeal, there isn't really a point to recording it expertly. Cart before horse.
Sometimes ambient, science fiction drone, etc, is appealing and inspired. Lid's stuff, as ambient, is appealing. Not much in the way of theme. If you introduce a theme, it has to do more than repeat itself until fatigue sets in, and the work, frustrate a listener. There are psyco-mechanical considerations to address.
A lot of 'ambient' composers hide lack of creativity by stretching ideas to fill time....like some kind of sound filling the length will suffice.
I'd remind you that Picasso was a superior artist who could paint beautiful, realist, works...before he set off into abstract.
A lot of artists dive into the abstract with no foundation in tradition...and fail miserably. The key is that effective abstract visual art is based upon the learning that precedes it.....knowing where to bend and stretch ideas while maintaining interest and aesthetics.
Ambient is an abstract form. To make it effective and appealing, you need to appreciate and experience and apply the art of crafting along traditional lines.
Classical 20th century composers who used devices like '12-tone row' to create the musical equivalent of Picasso's murals knew their harmony, and could play and analyze and appreciate Bach.
That's why I'm encouraging you to divest yourself of an hour of space to fill with sound, and attempt to make prettier music for much shorter durations, and THEN record it well....before you hit a wall...spending all that time and money producing a nicely packaged CD ...boxes of which will sit in you closet until you die...and be pitched in the trash by you heirs.
I wasn't panning your efforts or dreams...just trying to tell you you should start at the beginning. And the beginning of your dream is crafting ideas. Recording considerations are a few years down the road.
IMHO