Adding Product Of A Subquery To A Subquery Fails?

I am trying to add the results of both of these queries together:

The purpose of the first query is to find the number of nulls in the TimeZone column.

Query 1:

SELECT COUNT(*) - COUNT (TimeZone)
FROM tablename

The purpose of the second query is to find results in the AAST, AST, etc timezones.

Query 2:

SELECT COUNT (TimeZone)
FROM tablename
WHERE TimeZone NOT IN ('EST', 'MST', 'PST', 'CST')

Note: both queries produce a whole number with no decimals. Ran individually both queries produce accurate results. However, what I would like is one query which produced a single INT by adding both results together. For example, if Query 1 results to 5 and query 2 results to 10, I would like to see a single result of 15 as the output.

What I came up with (from research) is:

SELECT ((SELECT COUNT(*) - COUNT (TimeZone)
FROM tablename) + (SELECT COUNT (TimeZone)
FROM tablename
WHERE TimeZone NOT IN ('EST', 'MST', 'PST', 'CST'))

I get a msq 102, level 15, state 1 error.

I also tried

SELECT ((SELECT COUNT(*) - COUNT (TimeZone)
FROM tablename) + (SELECT COUNT (TimeZone)
FROM tablename
WHERE TimeZone NOT IN ('EST', 'MST', 'PST', 'CST')) as IVR_HI_n_AK_results

but I still get an error. For the exact details see:

[URL]

NOTE: the table in query 1 and query 2 are the same table. I am using T-SQL in SQL Server Management Studio 2008.