Seeing the plan written down like that... it looks good to me
But where I said 70+ mins for your first Sunday run... I wasn't that clear, but really meant something over 70 minutes. You can give it a try if you like, but probably add 2 or 3 minutes to your target times for each of those long runs. Save beating your PB either for your next 10K race... or at least for a few more weeks.
I do indeed have a brand new car - I appreciate that I'm lucky with this. But it just comes with my job. It does NOT mean I'm rich and that you can inflate your quotation. In fact, I have nothing spare.
First thing... going from couch to 10K, with your physique, is an impressive feat in 7 weeks. Well done!
Second thing... I doubt that your body is really ready to do much more at the moment... your heart and lungs have obviously adapted to some degree, but your legs have been taking a lot of repetitive high stresses... and it takes a lot more time for your bones and tendons to adapt. With the amount of progress you've made, they've probably been accumulating microdamage faster than it's been repairing itself. So having a little dip in your training for a week or so is actually a very good thing.
After that, assuming you're running 3 days a week, I'd have a month where you do a Sunday 10K on your own... at a slow place... perhaps starting out around 70+ minutes... but speeding up by 1.5 to 2 mins per week.
On the other days, a 3 mile slow run and another day where you do a 4 mile run where you run at a steady pace but throw in a "fast mile" somewhere in the middle. Maybe extend the length of your "fast mile" by a quarter of a mile each week (so your 5th run would be 5 miles with 2 fast miles). Not that 'fast' might be 10 min per mile pace. Maybe have a swim or a bike ride on one of the other days.
Once you've got that next 4 or 5 weeks out of the way, have another recovery week and reassess where you're up to. Good luck.