that true but the time required to Learn and control QI and naruto terrible talent for energy control wont help.

secondly he is human not a Saiyan so he is automatically in the same spectrum as Krillin and Yamcha, lastly charkra is a energy that utlizes your own vitality/life which is why ninjas dont live long they are using their Cells as energy so ultimately his potential would be inferior to Krillin and Others.

ninjas advantage in the DBZ world is versatility but naruto has no other ninjutsu besides Rasengan so versatility is out the window.

Kurama advantage is also reduce to zero as its not a MUltiplier but charkra transfer so unless Kurama becomes many times stronger he becomes useless.

the only useful thing in Naruto Arsenal is Sage Mode which can likely be combined with Ki and Charkra to form a new Form that should be able to make him comparable to a SSJ in terms of Multiplier, the problem is that it would require lots of time and the likely chance of naruto dying by practicing it, so if naruto does indeed reach early DBZ he wont be able to take part in any battles until Android Saga.