It's a starting point for negotiations, sure and probably not far off the accepted end goals in at least some ways, with a few minor tweaks to make it clear that all of this is purely voluntary on Russias part and they of course make no admission of 'wrongdoing' in any way.
Item 1, I'd maybe lean towards some kind of externally monitored referendum but the locals around remaining Russian or rejoining Ukraine, go from there. Either way could work.
2. Item 2, probably pretty acceptable to both parties with some negotiation of certain contested border areas.
3. Probably not far off, with the usual negotiation around amounts, administration and admissions of culpability.
4. Probably not gonna fly. It's a tricky one the seizure of public assets, and I doubt Putin has enough power over those guys at this point to be able to dictate such terms on them without seeing an internal coup.
5. Seems fair.
See, it's easy this negotiated peace lark! I dunno why they had such a hard time of it at Versailles...