That's the beauty of BBQ. Make it your own with what you have to work with. You can add a charcoal basket to the firebox and use the minion method for burning and will help with keeping a steady temp. All it takes is practice, practice, practice!
My arsenal, Stumps Clone, Two Modified offsets, open pit with grate and rotisserie,UDS, Weber One Touch Silver 18.5" kettle, Chargriller Pellet Grill, 36" Blackstone Griddle