100% you can and should draft a DT in the 1st round and i dont think it's rare that you should - but not a NT (unless they're an athletic freak like Vita Vea)...
no way im turning down derrick brown, javon kinlaw, quinnen williams, ed oliver, jeffrey simmons, christian wilkins, vita vea, jonathan allen, deforest buckner, kenny clark, chris jones (who should have been drafted in round 1 but wasnt), arik armstead, aaron donald
DL is a lot like EDGE in that if you want to find premium talents you've got to pay premium capital to get them
otherwise no real issues with how you've hamstrung it - i will say that I'd have no qualms about a RT at the end of the 1st either but they'd have to be supremely talented
obviously all of these positions have exceptions with generational talents at positions you wouldnt normally focus on in round 1 (e.g. kyle pitts, derwin james/minkah fitzpatrick, quenton nelson) and i think you're pretty bang on generally
whenever a team drafts a LB or a RB i always like it because of the talent it pushes down to us