Hello,
That looks too expensive, tbh.
As mentioned above, join the Irish Solar Owners Group, on FB. There's a wealth of really good information there, it's almost as good as this website is, for financial info.
When you join, all about a list that a guy called Cormac has put together, of various installers offering systems for under €5k, people will link you to it - he's very good known there.
A couple of quick points, if I may:
* Get as many panels as you can afford, they tend to run in the €300-€400 per unit range, depending on specifics.
* Get a Hybrid Inverter, even if you don't plan to get a battery, or a charger for a EV now, and don't want an Eddi, to get water. It leaves both options open to you, for later on.
* Huawei is a well regarded make, and comes with some additional benefits, but is expensive, compared to other established makes. If you get a Huawei Inverter, you'll have to get Huawei components on the future, such as a battery, and again, that'll be more expensive, albeit also has benefits.
* Do not pay a 50% deposit, a couple of installation companies have gone bust in the last while, leaving people with no come back, and having lost thousands. Most established installers will have flexibility. I paid a 20% deposit approx 1 month before instalation, with remaining 80% after all works were completed, for example. Also, where possible, pay the deposit by credit card, as it gives an element of protection, if something goes wrong.