thats what i am doing but i still have my xt and hq to work on aswell

As is said many times, opinions are like a***hole, everyone has one.

Nothing to do with engines is "yes or no" (within reason of c o a r s e); everything is to do with trade offs.

To those who say 190rwkw is unachievable, your f**k kidding; the reason it isn't done is because reliability and cost for most makes it not viable: you end up with an engine that would be a pig to drive on the street, very expensive and then leaving you questioning whether after spending all that money if you take it to the track do you really want to be revving it to the levels which are required to match the setup? (ie read into it more, if you don't rev it to these levels you will be getting beaten by cars with 'less power' being driven within the rev range they are designed to). In other words, if you are specifically after 190rwkw for the amount spent there are better options (ie any f/i whether chemical or physical).

Will hopper heads out flow a tickford head by much?

That's a very expansive question. I'm sure any aftermarket head will outflow the tickford one (it will probably perform better too).

But in saying this don't just assume because a head has more flow it will be a better choice.

does anyone ever get stock cranks and rods balanced? or flywheels lightened? i had it done on my VW engine and it made a huge difference in the behavior of the engine at high rpms. is there any counter balanced 4L cranks available? if its gotta revv, this is where i would be looking after a decent head and valvetrain. my 2 cents

if you rebuilt an engine and you didnt balance it, your a fkwit lol.
it would want to make a difference
from what i know all falcon cranks EF onwards are counter weighted for better balance, but could probly do a better job

As previously mentioned, 190rwkw is possible. If I remember correctly there was a guy who had 190rwkw but it was a track car.
Two reasons why people do not try to achieve this figure:
1. Not bang for buck- Just turbo or supercharge the car for same amount of money and get more power.
2. It is not recommended for street use as power will be in high rev range.