As far as nodes check out https://bitnodes.net they offer 3 nodes for $99/year.  There are a few other node hosting services on here too you can search for.  I'd say at least 5-8 permanent seed nodes some in your control some out of your control.

Seg-wit I've looked around read a few articles and dont see why not to do it, Block capacity/size increase, Malleability Fixes among other things you can check out at https://bitcoincore.org/en/2016/01/26/segwit-benefits/.  and http://achow101.com/2016/04/Segwit-FUD-Clearup

Also read this article https://www.cryptocoinsnews.com/bitcoin-segwit-privacy-trace-mayer/ where they imply that segwit could make it easier to implement anonymous transactions to the current code.

The only thing i'll say if you do choose to go segwit route, force it Hardfork it in, DONT softfork and DONT wait till everyone upgrades.  Leaving it up to the miners has delayed its adoption in Bitcoin and Litecoin.  I dont think any other coin has adpoted it please link if you have found one.

Something i would love to see on the ANN and Website is a detailed list of things the foundation wants to purchase i.e. nodes, Android wallet, site layout etc and their prices, how much the foundation currently has and how much it needs to complete these purchases. Also precompiled binaries for linux would be so great.