Laptop and printer advice

[leedogg3]

As per previous thread I am looking to sell some prints at a little unit I am taking on. The unit has no internet and electricity is on a meter. I am looking for a laptop to process photos and to use as a display tool for customers. Ideally it will have a decent battery life. It will only be used in unit as I have a desktop at home for most of the work. I am also looking for a printer capable of A3 prints which will provide professional quality prints. Any help is very much appreciated.

[2slo]

As far as the printer goes I've recently researched the options, not 'cos I want to sell prints, just because I'm fed up with inconsistent lab results. I went for the Canon Pixma Pro 10 A3 printer which gets very good reviews. The deal I went for was this one:
http://www.wexphotographic.com/buy-canon-pixma-pro...
The printer can be bought a bit cheaper elsewhere but the offer allowed me to buy a full set of replacement inks and 50 sheets of decent A3 paper for only £39 when ordered at the same time.