I think that part-time is very attractive to a lot of potential employees and you are dipping into an under-utilized talent pool. As with any role, you just have to find the right people. I had a 50% time engineer for a while who was more productive than the full-timer whom he replaced. In another role I had a full-timer who was measurably less productive than someone at 60% time.
Scale the salaries pro-rata. At around 60-70% time this works out very well for employers as you have a very focused worker who appreciates the flexibility.
If you actually have written offer for $14M then absolutely take it. Absent that, engaging with potential buyers will take a lot of your time and probably won't result in a sale. The road from interest to sale is long.
If you guys have $1M+ ARR, I'm happy to make some warm intros for you to Chicago-area VCs. Not SV but investors here love solid, profitable businesses and not always in "sexy" verticals, and there are real funds based here.
I'm an enterprise SaaS founder as well. Would be happy to talk further, just DM me on Twitter: @JosephFlesh
Scale the salaries pro-rata. At around 60-70% time this works out very well for employers as you have a very focused worker who appreciates the flexibility.