Since I've no experience of Armourtex, I can't comment if they will do either of those things for you, but they are both really quite easy to do yourself which will save a few quid on the bill.
Lug lining can be done with a fine brush and bottle of enamel paint from a model shop, or more easily with a paint pen. Removing unnecessary braze-ons can be done with a big metalworking file (which you can buy for about a quid from a car boot sale, or a tenner for a cheap new one). Metal files are pretty useful things if you are going to be fiddling around with bikes anyway.
Since I've no experience of Armourtex, I can't comment if they will do either of those things for you, but they are both really quite easy to do yourself which will save a few quid on the bill.
Lug lining can be done with a fine brush and bottle of enamel paint from a model shop, or more easily with a paint pen. Removing unnecessary braze-ons can be done with a big metalworking file (which you can buy for about a quid from a car boot sale, or a tenner for a cheap new one). Metal files are pretty useful things if you are going to be fiddling around with bikes anyway.