The plant is growing good now it's healthy and has alot more shoots
You'll get more yield outdoors but i personally would do it inside. You can control everything and grow a nice healthy plant. No bugs, no drought and No animals can harm your plant.
And that light should be plenty for that plant. The right bulb and good ventilation should really help you get the light closer, to get the most out of it, without harming it.
If you can, try tying the main top even with the others. If the top is highest than it'll continue to grow that way and will get out of control in stretch.
So imo that light would be perfect if you kept on training and made one nice even canopy. Its all about lumens and light penetration in my opinion. Don't worry about watts, get that light vented and as close as possible