nutrient chiller is very easy to implement and it's not expensive if you have basic electric circuit knowledge. look for peltier cooler or thermoelectric cooler (TEC) on ebay, aliexpress or amazon. good luck.
you won't be able to force reaper to bloom unless you have enough carbon / nitrogen ratio.
i will show you an example. this is an unhealthy reaper plant. it's about 30cm tall. i did force it to bloom.
i don't know why many people try to solve the problem using high P nutrient. does...
nope. it's too small.
i will give you some examples. this is when pepper plant is ready for transplant.
1st pic (pepper plants in 3oz cup)
2nd pic ( farmer market jalapenoes in 5oz cup )