Replacement ideas for a stolen Mason Bokeh

Hi long time lurker.
I recently had my Mason Bokeh stolen from our home last weekend, unfortunately not insured to it's full value.
Tbh I've since adjusted habits and more a runner these days but I do commute 7-10 mile each way depending on route. One route is 95% tarmac, 10% road rest shared paths/NCN the other route is 80% canal towpath, and a couple of fields with stairs for railway bridge crossing & 1 lock to cross, although it could be avoided by going on an A road to the canal. I haven't actually ridden the towpath way only ran it a couple of times.
I now work as a postie so it's not sustainable to run to/from work on top of the 5hr+ walking and training runs etc
I'm having heated debate with Mrs with what/how much to spend to replace the bike.
Do I
go second hand, again what sort of price/spec to go for?
Go similar spec to the Bokeh mainly mechanical ultegra hydraulic disc brakes
Something better possibly electronic groupset maybe even e bike
Franeset only and build own bike up
Or go something cheaper... but I feel must haves are rack and guards mounts and hydraulic disc brakes plus option to take fatter tyres wheels - the Mason was set up with 700*32 but could also be 650b which was the next thing to get, especially if going the canal way and now coming to winter.