PRC should not export the fighter over the next few years at least. After that, it should always be somewhat watered down version even though PRC will be ready to start mass producing J-50 and J-36 in early 2030s. But PRC needs number for itself. That is most important.
Look at the countries that have been very export-oriented but neglected their own needs. That would be Russia, France and Germany. Not that I care about French or German defence suffering, but Russia's direction was clearly wrong and it affects PRC to some degree (again, Russians always make mistakes that lasts for many years) and the problem was that Russia was exporting a lot, and now has serious problems with advancing in Ukraine, and they lost Syria after 9 years.
You have India and Algeria that has far more T-90 MBTs than Russia.
You have India with Vikra-carrier that Russia sold to them, and even though Vikra sucks, Kuznetsov sucks even more, but Vikra gave India a platform so they could build Vikrant.
Then you have Russia giving India nuclear subs on a 10-year lease. That's totally retarded.
Then you have Russia selling so many different type of Su-30 fighters that other countries again, namely India have more of those than Russia, albeit Russia has more Su-35, but that pretty much it.
Don't let me start with Improved Kilo class SSK. Russia sold a serious number of those whilst having old "standard" Kilos themselves. Again, big mistake. Only recently, Russia has introduced several Improved Kilos, but they are no longer modern as they were before.
Another mistake, selling S-400 to Turkey. Etc.
Then Russia is selling "Grigorovich" (Talwar) to India, whilst having serious problems with producting enough frigates for Russia's needs.
I can go on, but you get the point. PRC cannot have a situation where they're exporting a unit, in this case J-35 whilst having almost none themselves.
PRC need to cover their own needs first, and we are talking hundreds of J-35. PRC has the chance now to surpass the U.S. number of 5th gen aircraft and to start producing 6th gen before the U.S. All this at the same time.