Your standard house outlet can be either a 15 or 20 amp circuit. Many small electric heaters draw aprox 13 amps. Your converter lighting can equal several amps and depending on the size of your fridge, you can have a few more amps of usage while running the heater.

Check your house breaker box, to see what the capacity is, of the individual breaker protecting the circuit you want to use. If it's 15 amp, I would say no, you would be over its capacity whille running all that you mentioned. A 20 amp circuit will be close to being maxed out as well. And many codes don't want any more than an 80% load factor for a continuous duty circuit.

If you have an unused drier or electric stove outlet, you could probably modify the wiring for a 30 amp 110v circuit.

Gard