"So add 14objectors @ 210euro each together with the solicitors fee and residents association will go bankrupt."
I am sorry to depress you, but I am afraid if you are really serious about this matter, you are going to have to adjust your financial expectations somewhat.
I am not at all surprised that a solicitor shows no enthusiasm for the job.
I don't know what sort of solicitor's fee was being talked about, but 14 x 210 (which as other posters have pointed out is 13x210 too much) comes to less than €3,000.00 If your budget does not stretch this far, then you certainly will have a problem in getting the services of a professional. Do you think that the well-heeled objectors to Sean Dunne's plans had any trouble getting people to act for them?
Bear in mind that a planning appeal could (though it is most unlikely in this case) go to an oral hearing. Any person taking on this job will be conscious of the fact that the file could 'grow legs'.
My firm did an oral hearing once (which went on four about four days) for a residents association plus a few local clubs\associations. We got a 200-unit development shot down. The residents association balked at our fee of circa (if I remember rightly) £5,000.00 plus VAT and ended up paying about a third of it - but they had to do without us when the second planning application went through.
I learned a valuable lesson: cash up front for committee\residents association clients.
It is entirely possible that a fairly basic planning objection, put together with perhaps some small amount of professional input, might be enough to block this development. But if it isn't enough, will you be kicking yourselves afterwards at the thought that you could have done more? Only you can answer this.