Unlimited addresses, not with Ian Coleman?

I was planning on running the Coleman page offline in Tails to create my wallet info. Then enter it into Electrum either via "Standard" - "I have my seeds" or "Import" and use the QR, but then I remembered you had to choose a number of addresses at the bottom. If I leave it at the default 20 is that all I get or will it be basically unlimited like a normal wallet once created?

Anyone already used up their 20 from an Ian creation? I'm wondering if that field box is just there because the project required a way to show some addresses but obviously couldn't/didn't want to generate all possible addresses (it would basically never finish is my guess).

I think I just figured it out. If I would have used the "Import" feature I would have had the 20 QR's or a "list" of 20 addresses to import-so I would have been limited, but if I choose "Standard" "I have my seeds" -then you probably get the unlimited addresses?

Thoughts?

edit: If Im a BTC only hodler shouldn't i leave the derivation on BIP32 and not the default BIP44? However when you change it to anything other than BIP44, it says "invalid root key".