You can't legally renew an Ontario driver's license or OHIP if you are not living in the province. So, are you asking for advice on how to do something illegal? No forum allows people to ask or to answer questions on how to do something that is illegal.
Regarding your daughter and university, it all depends on what you are referring to when you say, 'will that affect anything'. Is she going to be legally domiciled in Costa Rica or is she going to stay domiciled in Canada? Is she going to be applying for any kind of student loans, etc? You have to look at what the requirements are for anything to do with her education, individually.
The best way to handle the transfer of funds from Canada depend on the source of the funds you are talking about. How to transfer savings or income from investments differs from how to best handle pension income for example.
For day to day pocket money and purchases, ExpatDave may be fine using Debit and Credit cards if they are cards from a US bank that does not add exchange loading on each transaction. However, if you have cards from one of Canada's 'Big Five' banks, you will find that they add 2.5% exchange loading on every transaction. So that is not the best way for you. As ExpatDave clearly and wisely acknowledges, he is not a Canada expert. Add up 2.5% of your day to day spending over a year and see what it would cost you.
Read here for a start. http://www.greedyrates.ca/blog/travel-t … NqVsjvyvIU
But that does not mean getting the right cards is even the answer. Again, it depends on how your income is derived. It may be better to look at 'non-resident for tax purposes' and having your income paid directly into a Costa Rican bank and paying income tax in Costa Rica rather than in Canada. But that depends on whether that avenue is even open to you. Getting the CRA to accept you are 'non-resident' is a difficult thing to do. They don't want to let go of you as a taxpayer. This is not a simple subject.
As for buying a home. that is probably the single biggest mistake people moving to a new country make. Of all the people I have seen move to their 'retirement paradise' in half a dozen countries I have lived in, 5 out of 10 were gone within 2 years and only 1-2 out of 10 were still there after 5 years. That may be anecdotal evidence but as you can see, I am not alone in suggesting that. ExpatDave has suggested the same thing.
I always suggest to people that it is far wiser to RENT for at least 1 and preferably 2 years before investing any real money in anything including a house. You have to get through the 'rose coloured glasses' phase and see if you are likely to 'stick'. Unfortunately, there is no way to know beforehand whether you will 'stick' or not. You simply have to go and see what happens.
Moving to another country involves a lot of different issues. While I am going to presume this is just your first stab at doing some research, I would advise you to treat each issue separately and research each separately. You can't just ask a few 'simple' questions and get a few simple answers.