What's your mower size? 3.25 hours mowing and 45 min of wacking/blowing? So 4 hours total? Long time for one person, one property. 135 is low. I'd be about 200-235 per cut. For mulch I've got a set price of 105/yard installed with edging weeding pruning for property's kept up with. If things are way behind then price is more. Be a great account for 17 if you can price it right to make money on. Sometimes big lawns go faster than you may think if you're able to fly back n forth.
2011 f350 crew cab short box
1999 K3500 6.5
Stihl wackers/hedge trimmers
Little Wonder Vac/Walk behind blower