You're going to want to germinate/clone in a separate area with lower temps. I've had far less luck getting plants off the ground with temps in the high 70's to low 80's.. but once the plant has a healthy root bed as long as you keep it moist the plant will still grow (though I have heard it will diminish the rate of growth unless you have a co2 setup to compensate). I finished an LED grow in a wooden cab with high 76-84deg temp swings in lights off/on in the summer. The plants grew slowly and didn't reach full potential because of many reasons including nute burn, gnat infested soil, drastic temp swings and extremely high temps at points (in the 90's) before I transitioned them to a better cabinet. It's hard for me to say if the heat played a huge part in it once I stabilized it in the low-mid 80's but I believe it did. I would love to flower around 78 with 30% rh during lights on, personally..