Sounds like this will be a nice boat when it's finished mate. Have you any pics of the hull- have you built it?
You will need an inline displacement steam lubricator, there are many places to get these- Steamfittings.co.uk Reeves 2000, Stuart Turner, Modellbau-niggel.de, Live Steam Models, Mainsteam Models- reading through the threads and a good google session should find you more- though theres plenty to start with there.
There are two trains of thought re. hand pumps- your boiler is a quick steamer and you should get a good 25-30mins steaming time with a full boiler- if this is good enough for you then leave it. If, like me, you feel that isn't enough and don't want the boiler to lose pressure and go cold by re-filling before having another steam then yes, a hand-pump will be necessary.
It is definitely worth fitting lagging under the boiler- again check out the suppliers listed above as some supply suitable lagging- 1.5mm Kaowool or similar would be fine and discreet.
If you have soldering skills you can make a condenser for far less money than buying one, and you can make it to a size that fit's the boat you are building.
Greg
