For replacing practical tube lights, how many did you use?

[Edith blazek]

Hello, so I want to have a set of rgb lights like astera titans I can use as practicals to replace existing practicals but the problem is that it seems like it can get very expensive very quickly, even using cheaper RGB tube lights like the quasars, nanlites, or amarans, so I want to go about this so I only get what I need. So that leaves me asking to anyone that has done this, how many lights did you use to replace practicals on location or set? And before you ask, I'm not sure the rental houses in my area would have a sufficient amount of titans or any such light for this, so please help.