Merging two querying - sql

Question

I will introduce my problem with a simple example.
I have two generic queries on the same table, say table 'customers'
Defined 'plushes' a table containing information about in-store plushes, the following first query retrieves for a certain subset of Customers, say first subset, their preferred plush.
WITH preferences
AS
(
SELECT CustomerID,
CustomerName,
City,
Country,
PlushType,
PlushPrice
FROM customers cs
LEFT JOIN plushes ps
ON cs.CustomerID = ps.CustomerID
WHERE cs.CustomerID < 4
)
SELECT CustomerID, PlushType, PlushPrice
FROM preferences
In the same way, defined 'dishes' a table containing world famous dishes, the second query retrieve for a another subset of Customers, say second subset, their preferred dish.
WITH foodPreferences
AS
(
SELECT CustomerID,
CustomerName,
City,
Country,
FoodName,
FoodPrice
FROM customers cs
LEFT JOIN foods fs
ON cs.CustomerID = fs.CustomerID
WHERE fs.FoodName = 'pizza'
)
SELECT CustomerID, FoodName
FROM foodPreferences -- it returns customer 6
What I am searching for, is a query that shows customerID, plushType, plushPrice for the customers of the first OR the second subset, i.e. :
That means, I would like to apply the first query to the first OR a second (deriving from another query) subset.
In other words, I want to run the first query for those customers who love pizza.
I am using OracleDB, with PL/Sql language.
Any idea?
P.s. I know that for the written example the structure of the used queries appears weird. Indeed, I am working with something more complex and I preferred to mirror the structure of the query I have

Answer 1

Added this new answer that is more efficient:
with selected_customers (customerid) as (
select customerid
from customers
where customerid < 4
union
select customerid
from customers
left join foods fs on cs.customerid = fs.customerid
where fs.foodname = 'pizza'
)
select customerid, ps.plushtype, ps.plushprice
from selected_customers cs
left join plushes ps on cs.customerid = ps.customerid;

Answer 2

This query will do:
select customerid, plushtype, plushprice
from customers cs
left join plushes ps on cs.customerid = ps.customerid
where customerid in (
select customerid
from customers
where customerid < 4
)
or customerid in (
select customerid
from customers cs
left join foods fs on cs.customerid = fs.customerid
where fs.foodname = 'pizza'
);