I'd fire it tonight...and let it run....The paint will be flash 'heat treated'! You will lose 30 lbs tomorrow if you wear the tyvek suit all day. I'd set up the IV drip tonight on yourself......gotta stay hydrated!
93 here also today....down to 89 right now.
The boiler is at 150 degrees burning about 35 lbs a day. Yes, I do use my radiant slab as a extra heat scrubbing device, if I need one.
Haven't needed it yet....but tonight at 70 degrees may change that. Yup, A/C is on....comfy 73 inside!