Both topologies you have given have a single point of failure in terms of the uplink to the DSL connection.
Although the network is not huge, its big enough to require more than one vlan in my opinion so you would need a Router capable of routing between vlans or a switch which can do basic routing.
If you look at the Cisco Enterprise Campus model on thier website and try to stick to this in terms of the topology (the Core/Distribution can be a single entity).
In terms of cabling, it will depend on the budget and how many comms cabinets/rooms you plan to have. If money is no issue you would be going Cisco for your switches right? Have a look at the differences between CAT5E/6/7 etc and decide from there. If you can afford to run Fibre then go for it but bear in mind the switches will need to be capable of doing fibre so could need additional modules and SFP's etc.
95 metres and GigabitEthernet? You are approaching the outter fringes of what GigabitEthernet can achieve. I doubt if you can get GigabitEthernet when your horizontal cabling along is 95 metres. How many metres are your patch cables?
Depend how many people would use this network but personally I would use first hop redundancy protocol to asure high availiblity. As Leo said 95m is bit too much for gigaethernet. 1000Base-T should work up to 328 feet. But is only theory.
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