Question about CBD

Hello, me and my friend are currently playing the pack and we are somewhere in EV/IV. We have set up miners, basic chemicals production, oil destilation etc. etc. you know the usuall stuff at this point in time. We have been using Cetane Boosted Diesel from oil refinement for a while now and the plan is to switch later on for Rocket Fuel. We have not had any problems for now with fuel production and we are usually topped of on our Super Tanks with CBD. We dont really wanna switch to different fuel now cause that would mean rethinking the entire infra and we just decided that if we run into problems we will scale up our CBD production instead. How far do you thing we can go with just uptiering our LCRs, distilation towers / dangotes, crackers and others stuff or adding just more, untill that is just not feasable anymore?