I have no problem with people doing this. You won't receive overwhelming support here (or on any site) though. The majority will generally default to a more guns and rookies approach.
I decided at the end of last season that I was definitely picking LDU, Warner, Green and Serong this year. I've cooled on Serong (partly for team balance, also keen on Titch), but I want to pick the other 3. What happens is, you continually read that it's not a good idea and get "brainwashed" into going with the masses.
It is always said that "you need everything to go right with your mid-pricers". The thing that doesn't get mentioned by those picking all the top-dollar guns, is the other half of that equation - the rookies. Oliver, Laird and Miller etc. may well pump out 130's and outscore Parish, Anderson, LDU, Warner etc. but those people are exposed to more rookie scores on-field. They need more rookies to continue to get selected and to score at an acceptable level.
Your midpricer might drop a 50, but rookies might drop a 20 and get dropped. History shows that there are not an unlimited number of rookies that perform as required. It is usually about 10 or 11 that can be deemed genuinely successful picks. Given everyone will have 8 or 9 on the bench, those that need a further 8 or 9 on-field are exposed to greater risk. Even if their on-field rookies perform, they may have weak or non-existent cash generators on the bench relative to a more mid-priced team. It doesn't look like we have the free-hit cheap keepers like Cogs and Brodie this year, meaning there are likely to be more positions that require upgrading.
My advice would be to stick to your original thinking. There is nothing wrong with any of the players you listed.