Electrical Question

[benapilot]

I'm mentally planning the electrical needs for my 75 gallon build and would love to get some feedback.

I've got one outlet near the tank; it's already on a GFCI circuit.
Here are my electrical needs:

Digital Aquatics PB4
1- Jebao DCT-4000
2- Jebao RW-4
3- Jebao RW-4
4- Vertex Omega 130 Skimmer
Digital Aquatics PB4
1- Heater
2- Heater
3- Gyre
4- Kalk Stirrer or Dosing Pump
Rack mount power bar (8 switchable outlets)
1- AI Director
2- Hydra 26
3- Hydra 26
4- Digital Aquatics Archon
5- Under cabinet light
6-8 Future needs

Looks like I've got three plugs.
Can I run one heavy duty extension cord with three outlets or do two and one into the wall?

 

[mr fixit]

2 Good big power strips plugged into the wall n if u need a third plug that one into one of the two but put the heaters on the first power strip closest to the wall they draw the most amps. 100 watts equils 1 amp draw powerheads and lift pumps barely use any watts