I suspect a 96bhp 1.4 engine would struggle to provide enough power to spin up a supercharger and two turbochargers. I also suspect that the charging units you have chosen would not be well matched to your engine.
Might I suggest obtaining something like an IHI from a Lancia Y10 Turbo, a G40 G-ladder from a VW Polo 1.3 G40 or a Garret from an MG Metro Turbo. Any of these units would be far better suited to your engine.
Installing a turbocharger or supercharger involves reducing the engines compression ratio. This can be achieved in a number of ways but probably the easiest is to get a lazer cut metal sandwitch plate and install it either side of two head gaskets. Alongside doing this you'll need to fabricate a custom bracket and pulley if you're going to supercharger route or custom exhaust manifold if going the turbo route. Whichever route you go, you'll need to add some induction pipework to deliver the boosted air to the inlet manifold. You'll need to have the ECU ignition and injection MAP reprogrammed to suit, this is best done on a rolling road. You may also need an oil feed to the charging unit as many of them require lubrication.
If it is your intention to install both a supercharger and a turbocharger you'd encounter significant engineering challenges as you'd be effectively "twin charging" the car. This requires some serious hardware. I am only aware of three cars that use a supercharger and turbocharger, the Nissan Micra ice racer, the Lancia Delta S4 Group B rally car and the Mk5 Volkswagen Golf GT 1.4 TSI. The Golf is probably the closest vehicle to yours, being a road car with the same engine displacement. This car makes around 140bhp so it does represent a good gain (around 40%) in power.
I would suggest that, unless you have access to a good engineering facility, this is probably not the most cost effective idea.